Anggraeni, Witta, Hermien Tridayanti, and Mohammed Al-Amrani. “The Effect Of Human Resources Development And Work Environment Towards Employee Performance Improvement PDAM Surya Sembada City Of Surabaya”. IJIEEB International Journal of Integrated Education, Engineering and Business eISSN 2615-1596 pISSN 2615-2312 1, no. 1 (March 31, 2018): 11-18. Accessed December 5, 2025. http://jurnal.narotama.ac.id/index.php/ijieeb/article/view/791.